韧性断裂裂尖过程区细观力学性态的微观物理机制  

MICROPHYSICAL MECHANISM OF THE MESO-MECHANICAL BEHAVIOR OF DUCTILE FRACTURE'S CRACK TIP PROCESS ZONE

作　　者：袁龙蔚[1] 

机构地区：[1]湘潭大学流变力学研究所,湖南411105

出　　处：《内蒙古工业大学学报（自然科学版）》1997年第3期15-20,共6页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：国家自然科学基金!NNSF-19632030

摘　　要：采用与原子间力的类型无关的原子间配对势来构造裂尖过程区的量子统计模型，根据材料韧性断裂过程中裂尖过程区显现热效磁效应的实验结果，研究了裂尖过程区的微观物理机制．证明材料的破坏过程绝非是一个纯粹的力学过程，热-力-电磁耦合效应不容忽视．Pairing optential between atoms,irrelevant to the type of force between them,is adoptedto build a quantum statistical model for the crack tip process zone. Based on the experimentswith the thermomagnetic effect produced in the crack tip process zone during the ductile fracture process of material,micro-physical mechanism of this zone is studied. It is proved thatthe damage process of material is by no means a pure mechanical one. The heat-force-electro-magnet eoupled effect is not to be ignored.

关 键 词：裂尖过程区 韧性断裂 微观物理机制 细观力学 

分 类 号：O346.12[理学—固体力学]